Quote Originally Posted by ic-racer View Post
I have about ten lenses in Copal shutters and none of the aperture scales spreads out like that. But you got what you got.
I think you're right, the spacing on all my Copal shutters is not like that it's equal spacing between every f-stop. I'd actually copy the f-stop scale from a 210mm Symmar/Sironar shutter, the difference between a 203mm and 210 mm lens for the same aperture is very small and insignificant, the OP could adjust for it in positioning anyway if needed.

At the moment some stop markings are quite significantly out, I'd need to check my 210mm Symmar S, plus I have a spread sheet for calculating corrected apertures for the same Shutter with different FLs fitted.

Ian